Buscar
Mostrando ítems 1-10 de 43
Comparative study on the degradation of cephalexin by four electrochemical advanced oxidation processes: Evolution of oxidation intermediates and antimicrobial activity
(Elsevier B.V., 2019-09-15)
The degradation of the beta-lactam antibiotic cephalexin (CEX) was carried out by the following electrochemical advanced oxidation processes (EAOPs): anodic oxidation (AO), Fered-Fenton (EF-Fered), photoassisted anodic ...
Transient spectroscopic characterization and theoretical modeling of fulvic acid radicals formed by UV-A radiation
(Elsevier Science Sa, 2017-01-01)
Laser flash-photolysis experiments (λexc = 355 nm) performed with aqueous solutions of Pony Lake and Waskish Peat fulvic acids at pH = 2 showed formation of transient species with absorption maxima at 470?480 nm with ...
Simultaneous degradation of ciprofloxacin, amoxicillin, sulfathiazole and sulfamethazine, and disinfection of hospital effluent after biological treatment via photo-Fenton process under ultraviolet germicidal irradiation
(2018-05-01)
A UVC-assisted photo-Fenton process was applied to hospital wastewater that had been submitted to anaerobic treatment. Low iron (10 μM; 0.56 mg L−1) and H2O2 (500 μM; 17 mg L−1) concentrations were used at the natural pH ...
Molecular structure and antibacterialactivity of degradation products from cephalexin solutions submitted to thermal and photolytic stress
(Willey, 2022-11-21)
Cephalexin is a beta-lactam antibiotic of the first generation of cephalosporins which is very effective against various bacterial infections. In this work, we investigate the structure and antibacterial activity of ...
Degradation of nonylphenol ethoxylate-9 (NPE-9) by photochemical advanced oxidation technologies
(American Chemical Society, 2010-08)
The applicability of different photochemical advanced oxidation technologies (PAOTs), namely, direct UV-C photolysis, UV-C/H2O 2 and UV-A/TiO2 heterogeneous photocatalysis (HP), and photo-Fenton reactions (UV-A/H2O2/Fe2+, ...
A high-performance doped photocatalysts for inactivation of total coliforms in superficial waters using different sources of radiation
(2016-07-15)
Photocatalytic water treatment has a currently elevated electricity demand and maintenance costs, but the photocatalytic water treatment may also assist in overcoming the limitations and drawbacks of conventional water ...
Obtenção e análise de espectros de absorção de luz por herbicidas
(Universidade Estadual Paulista (Unesp), 2018-12-18)
Cada substância apresenta um padrão de resposta específico quando submetidas à radiação solar. No entanto, estudos que comparam diferentes moléculas, a fim de identificarem padrões de comportamento são escassos. Portanto, ...
A High-performance Doped Photocatalysts For Inactivation Of Total Coliforms In Superficial Waters Using Different Sources Of Radiation
(ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTDLONDON, 2016)
A High-performance Doped Photocatalysts For Inactivation Of Total Coliforms In Superficial Waters Using Different Sources Of Radiation
(Academic Press LTD - Elsevier Science LTDLondon, 2016)